/*
 * Copyright (c) 2011-2024, baomidou (jobob@qq.com).
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.xiaoyudeguang.handler;

import com.baomidou.mybatisplus.core.toolkit.Assert;
import com.baomidou.mybatisplus.extension.handlers.AbstractJsonTypeHandler;
import com.fasterxml.jackson.core.JacksonException;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ObjectNode;
import com.fasterxml.jackson.databind.type.TypeFactory;

import java.lang.reflect.Field;

/**
 * ObjectNode类型字段映射
 *
 * @author 赵光
 */
public class ObjectNodeTypeHandler extends AbstractJsonTypeHandler<ObjectNode> {

    private static ObjectMapper OBJECT_MAPPER;

    public ObjectNodeTypeHandler() {
        super(ObjectNode.class);
    }

    public ObjectNodeTypeHandler(Class<?> type) {
        super(type);
    }

    public ObjectNodeTypeHandler(Class<?> type, Field field) {
        super(type, field);
    }

    @Override
    public ObjectNode parse(String json) {
        ObjectMapper objectMapper = getObjectMapper();
        TypeFactory typeFactory = objectMapper.getTypeFactory();
        JavaType javaType = typeFactory.constructType(getFieldType());
        try {
            return objectMapper.readValue(json, javaType);
        } catch (JacksonException e) {
            log.error("deserialize json: " + json + " to " + javaType + " error ", e);
            throw new RuntimeException(e);
        }
    }

    @Override
    public String toJson(ObjectNode obj) {
        try {
            return getObjectMapper().writeValueAsString(obj);
        } catch (JsonProcessingException e) {
            log.error("serialize " + obj + " to json error ", e);
            throw new RuntimeException(e);
        }
    }

    public static ObjectMapper getObjectMapper() {
        if (null == OBJECT_MAPPER) {
            OBJECT_MAPPER = new ObjectMapper();
        }
        return OBJECT_MAPPER;
    }

    public static void setObjectMapper(ObjectMapper objectMapper) {
        Assert.notNull(objectMapper, "ObjectMapper should not be null");
        ObjectNodeTypeHandler.OBJECT_MAPPER = objectMapper;
    }

}
